SK368091A3 - Device for potential energy recuperation of working device of building or earth machine - Google Patents

Device for potential energy recuperation of working device of building or earth machine Download PDF

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Publication number
SK368091A3
SK368091A3 SK368091A SK368091A SK368091A3 SK 368091 A3 SK368091 A3 SK 368091A3 SK 368091 A SK368091 A SK 368091A SK 368091 A SK368091 A SK 368091A SK 368091 A3 SK368091 A3 SK 368091A3
Authority
SK
Slovakia
Prior art keywords
hydraulic
accumulator
acting
double
connected
Prior art date
Application number
SK368091A
Other languages
Slovak (sk)
Inventor
Frantisek Krnavek
Original Assignee
Frantisek Krnavek
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Frantisek Krnavek filed Critical Frantisek Krnavek
Priority to CS913680A priority Critical patent/CZ279137B6/en
Publication of SK368091A3 publication Critical patent/SK368091A3/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B21/00Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/14Energy-recuperation means
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02FDREDGING; SOIL-SHIFTING
    • E02F9/00Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20Drives; Control devices
    • E02F9/22Hydraulic or pneumatic drives
    • E02F9/2217Hydraulic or pneumatic drives with energy recovery arrangements, e.g. using accumulators, flywheels
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B1/00Installations or systems with accumulators; Supply reservoir or sump assemblies
    • F15B1/02Installations or systems with accumulators

Description

-Vyy > $ 0- ty

Apparatus for Recuperation of Site Construction or Shutter Technology

M s ϊ ‘

The invention relates to devices for recovering the positional energy of a building or earth moving machine, for example a hydraulic shovel, to reduce energy consumption, in particular diesel fuel consumption.

BACKGROUND OF THE INVENTION [0002] In known apparatuses for the recovery of positional energy of a working device, this energy is accumulated in the form of a hydrostatic, for which the system of power hydraulic distributors, in the hydropneumatic accumulator when the boom is lowered, is used again.

The disadvantage of these devices is the complexity and low reliability, also manifested in the low cost-effectiveness of the device and in the low reliability of the whole machine. In another known position energy recovery device, the working device is provided with an additional straight-acting single-acting hydraulic motor connected mechanically between the machine frame and a working device which is connected to the hydropneumatic accumulator via a distributor to the reservoir or to a pump.

The disadvantage of this device is that it reduces the working force of the working device when moving downwards, which does not allow it to be used with excavators. A further disadvantage is the high cost, since the device must have two more three-position two-way distributors, which further reduces machine reliability. In another known position energy recovery device, the working device is provided with a straight-line accumulator motor, the piston space of which is filled with pressurized gas and interconnected with the pressurized gas reservoir.

The disadvantage of this device is that the pressurized gas cannot be completely sealed and gas leaks after a relatively short period of time and the equipment function is lost. In the case of a known device for the recovery of the positional energy -2-, the working device is provided with a double-acting natural and cumulative hydraulic motor, the piston space of which is connected to a hydropneumatic accumulator, eventually a connecting orifice, possibly via a distribution or alternatively a pig. connecting and distribution equipment. The disadvantage of this device is that it is difficult to fill the piston space of the double-acting rectilinear accumulation hydromotor with a dropper after the operation / operation or even during commissioning. Another disadvantage is that due to the imperfect tightness of the hydraulic elements, it comes to an end. the pressure drop in the hydropneumatic accumulator so that, after a short period of operation, the demisting of the boom is in the lowest, that is, the filling pressure of the hydropneumatic accumulator, which is also unfavorable with regard to its lifetime, and the operation of the boom in which the accumulated energy is used is gradually reduced during operation from a hydropneumatic accumulator, which reduces the effect of energy accumulation and gradually disables the function. A further disadvantage is that the wiring of the interconnector does not allow sensitive connection and disconnection of the hydropneumatic battery in the production line, which will either impair machine control or reduce the cost-effectiveness of the equipment.

Summary of the Invention "

The above drawbacks are largely eliminated by the device for recovering the positional energy of a building or earthmoving equipment, where the work equipment is provided with at least one natural-colored hydraulic motor for lifting and lowering the work equipment connected to the machine hydraulic system and where between the machine frame and working equipment is built in at least one double acting straight-line storage hydraulic motor, whose piston space is interconnected with the piston rod space of the rectilinear hydraulic motor and the piston space is connected to a hydropneumatic accumulator. a hydraulic system is connected between the piston orostor of the double-acting rectilinear accumulator hydraulic motor and the hydropneumatic accumulator, and the hydraulic distribution device is connected hydraulically, the second channel of which is connected to the liquid tank. The accumulator is connected to the hydraulic connection device and the hydraulic control unit is connected.

It is an object of the invention that the return line from the piston rod space of the hydrorotor is coupled to the finger compartment of the double-acting rectilinear storage hydrorotor through the non-return valve and furthermore the return branch is connected to the liquid reservoir through the pressure valve. Preferably, the piston space of the rectilinear hydrorotor is coupled to the piston space of a double acting rectilinear accumulator through a non-return valve.

The post-hydraulic hydraulic device is preferably formed by a saddle valve with a control hydraulic distributor controlled either by a hydraulic signal or by an electrical signal from the pressure relay, whereby the control hydraulic distributor or pressure relay is hydraulically connected to the outlet pressure branch of the boom lowering actuator. An advantage of the device for the recovery of the positional energy of the building equipment or machine, according to the invention, is that it is sufficient to raise the boom to the discharge height and to be in and out of the vehicle to operate the vehicle 10 in operation. The higher operating pressure of the hydropneumatic accumulator is achieved by the various boom lifts. A further advantage is that a cheap hydraulic connection device can be used, the connection of which ensures sensitive operation of the machine. Overview of the drawings

In the drawings, the invention is schematically illustrated in the exemplary embodiment. FIG. 1 is an alternative with two rectilinear hydraulic motors for lifting and lowering the working device; FIG. Fig. 2, 3 are alternatives with a single rectilinear hydraulic motor for raising and lowering the working device, with Figs. 2 is a variation with an interconnecting hydraulic device, wherein the weak solid line is an electrical connection, and FIG. 3 is a variant of nroooj " and distribution systems.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The working device boom 2, for example a hydraulic shovel excavator, is provided with at least one straight-line hydro motor 5 connected to a hydraulic machine system. The device for recovering the positional energy of the working device 2 is formed by a double-acting straight-line accumulation hydraulic motor 3 which is mechanically articulated between the frame 1 and the boom of the working device 2. The piston proator 32 of the double-acting rectilinear storage hydraulic motor 3 is filled with a pressure capsule and further it is fitted to a hydropneumatic accumulator 4 fitted with a safety valve 7 and a direct-current valve JM connected to the return line in the U2 from the ward space 2 1 8 UU. it is further connected via a pressure valve 10 to the liquid tank 9. The piston rod space 31 of the double-acting rectilinear storage hydraulic motor 3 is filled with liquid and is connected to the piston rod space 51 of the rectilinear hydraulic motor 2 of the working device 2. The design of the double-acting rectilinear accumulating hydraulic motor 3 is preferably coincident with the linear hydraulic motor. The piston space 2Ά of the rectilinear hydraulic motor 5 is connected via a non-return valve 14 and via a throttle valve 15 to the finger compartment 32 of the double-acting storage hydraulic motor 3.

Alternatively, between the piston space y2 of the double-acting rectilinear accumulation hydraulic motor 3 and the hydropanumatic accumulator 4, the hydraulic connection device 6 or the hydraulic distribution device 8, the second channel of which is connected to the liquid reservoir 9, is hydraulically connected, if necessary, the hydraulic connection is hydraulically connected. device 6 and distribution hydraulic device J3.

The connecting hydraulic device 6 is preferably a saddle valve 61 with a control hydraulic distributor 62 controlled by a hydraulic signal, or an electrical signal from a pressure relay j) 3. The control hydraulic distributor 62 or the pressure relay 63 is hydraulically connected to the outlet pressure branch 13 of the actuating actuator equipment 2.

For example, the distribution hydraulic device 8 constitutes a distributor controlled by a hydraulic or electrical signal generated by the pressure increase in the interconnected piston rods -5- and the linear actuator 5 of the working device. The power of the driving notor and the pump generator is either reduced by the use of a smaller drive unit or by a change in seris, for example by reducing the engine operating speed.

At standstill, the static load capacity of the working device 2, in the fuse, is determined by the static pressure set on the safety valve of the hydraulic system of the machine, acting in the finger spaces 52 of the rectilinear hydraulic motor 5 of the working device 2 and further to the instantaneous pressure in the hydropneumatic accumulator 4 acting in the piston orostore 32 double acting hydraulic motor.3 ·

Optionally, when the operating device 2 is stationary, the hydraulic coupling device 8 is moved into the closed position. The static load carrying capacity of the working device 2 is then determined by the naximal static pressure set on the safety valve of the machine hydraulic system, acting in the finger spaces 52 of the straight-line hydraulic motor 5 of the working device 2 and further by the pressure set by the safety valve 7 acting in the piston-free housing. a double-acting straight-line storage hydraulic motor 3. The pressure of the safety valve 7 is advantageous to set the same as the static pressure of the safety valve of the hydraulic machine. Thereby, in this variant, a higher static load capacity of the working device 2 is achieved. 4

When the working device 2 is started, the pressurized fluid from the hydraulic system of the machine is fed into the piston rod space 51 of the rectilinear hydraulic motor 5 and the piston chamber 31 of the double-acting rectilinear storage hydraulic motor 3. The pressure fluid from the finger space _52 is extruded through the hydraulic system of the machine into the liquid reservoir 9 and the fluid compartment of the finger compartment 32 of the double-acting rectilinear accumulation hydrocarbon 3 is extruded into the hydropneumatic accumulator 4, either directly or alternatively via the forced-closed seat valve of the interconnection device 6. By the pressure in the hydropneumatic accumulator 4, on both the liquid and the gas side. The piston space 32 of the double acting rectilinear accumulator hydraulic motor 3 is overloaded to reduce the start-up of the working device 2, without the energy being wasted, because the energy accumulates. In the case of the working organ resistances, the flow that the pressure in the interconnected piston rod 31 and 21 of the double-acting rectilinear accumulator hydraulic motor 3 and of the primary hydraulic motor 3 of the working device 2 is increased above the zero value and thus adjusts a distribution hydraulic device 8 that connects the tapping space 32 of the double-acting rectilinear storage hydraulic motor 3 to the liquid reservoir 9 and disconnects it from the hydropneumatic accumulator ru 4. The actuating force is increased when the working device 2 is lowered. the fluid into the finger free 32 of the rectilinear hydromotor 31 thereby causing the working device 2 to be lifted and at the same time overloaded by the pressure of the gas and liquid from the hydropneumatic accumulator 4 acting on the piston of the double-acting rectilinear storage hydraulic motor 3 either directly or alternatively for the self-acting open valve 64 prop the hydraulic loading device 6, thereby using the previously accumulated energy from the hydropneumatic accumulator 4. When the pressure in the hydropneumatic accumulator 4 drops below the pressure in the piston free 52 of the hydraulic motor 5 of the working device 2, the liquid flows into the hydropneumatic accumulator 4 via the direct current valve 14 and through the throttle valve 15, thereby liquid loss of the device leakage and surplus the liquid, compared to the losses achieved by a suitable throttle valve 15, ensuring that the working pressure of the hydropneumatic accumulator 4 is attained even when the working equipment 2 is lowered.

Industrial usability

The device for recovering the positional energy of the work apparatus according to the invention can be advantageously used in building and earth moving machines, while the embodiment according to FIG. 1 is advantageous in the machine with the requirement of a high action force of the working device in the lifting direction, such as for example loaders, hoists, universal hydraulic excavators for loading and depth equipment and for general use. The embodiment of FIG. 2 is advantageous in a machine that has less demands, but the action lifting power of the working device and has a bridge with the main drive main, Vi or - "-; The option of a 5-inch drill-type looat rv- -7- is provided with a depth shovel. FIG. 3 is preferred for use as in FIG. 2, where the power is used concurrently when the work load is triggered as a washing machine action force - / L > > r r Q J J r r r r r r r

Claims (3)

  1. I ·. · - · 8 - P A? M2 > o -14
    Establishment of a positioning machine for the work equipment with, or in, a ground machine, where the work equipment is provided with at least one roller; a hydraulic motor for raising and lowering the work equipment connected to the hydraulic system of the machine and where there is at least one double acting, superheat storage device between the machine frame and the work equipment, the nipple or oris with the hydromoto.ru and the piston space being · Connected to a hydrooneumatic accumulator, or between the piston area of the double-acting rectilinear accumulation hydro-motor and the hydrooneumatic accumulator is hydraulically connected to the hydraulic connection, or it is between the piston space. double-acting straight-line accumulator hydraulic motor. the hydraulic connection of the hydraulic distribution system, the second channel of which is connected to the liquid tank, the hydraulic connection and the hydraulic distribution system are hydraulically connected one after the other between the piston space of the double acting rectangular accumulator and the hydrooneumatic accumulator; wherein the waste branch (12) from the writing space (51) of the rectilinear hydraulic motor (5) and from the piston rod space (31) of the double-acting accumulator accumulator (3) is coupled to the finger space (32) of the double-acting rectilinear accumulator through the hydromotor (3) through the non-return valve (11) and further the waste branch (12) is connected to the liquid tank (9) via the pressure valve (10). l
    i i i ", t *
  2. 2. Apparatus according to item 1 ,. characterized in that the piston space (52) of the rectilinear hydraulic motor (5) is coupled with the finger space (32) of the double-acting rectilinear accumulating hydraulic motor (3) through the " non-return valve (14) · Device according to point 1 or 2,% e y * ~ * z ® rie J 0 t in? where the hydraulic control valve is connected to a hydraulic-hydraulic control valve, or the electrical relay from the pressure relay, characterized in that the control hydraulic distributor (62) , or the pressure relay (63) is hydraulically connected to the output pressure branch (13) of the actuator of the operating device (2).
  3. 4. Apparatus as claimed in claim 1 or 2 or 3, wherein the power of the drive motor and the machine hydrogenator is reduced.
SK368091A 1991-12-04 1991-12-04 Device for potential energy recuperation of working device of building or earth machine SK368091A3 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CS913680A CZ279137B6 (en) 1991-12-04 1991-12-04 Apparatus for recuperation of potential energy of a working device of a building or earth-moving machine

Publications (1)

Publication Number Publication Date
SK368091A3 true SK368091A3 (en) 1994-05-11

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Family Applications (2)

Application Number Title Priority Date Filing Date
SK368091A SK368091A3 (en) 1991-12-04 1991-12-04 Device for potential energy recuperation of working device of building or earth machine
SK66094A SK66094A3 (en) 1991-12-04 1992-12-03 Apparatus for energy recuperation

Family Applications After (1)

Application Number Title Priority Date Filing Date
SK66094A SK66094A3 (en) 1991-12-04 1992-12-03 Apparatus for energy recuperation

Country Status (11)

Country Link
US (1) US5477677A (en)
EP (1) EP0615583B1 (en)
JP (1) JP3231771B2 (en)
AT (1) AT164209T (en)
CZ (1) CZ279137B6 (en)
DE (1) DE59209243D1 (en)
DK (1) DK0615583T3 (en)
ES (1) ES2113443T3 (en)
GR (1) GR3026601T3 (en)
SK (2) SK368091A3 (en)
WO (1) WO1993011363A1 (en)

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Also Published As

Publication number Publication date
GR3026601T3 (en) 1998-07-31
CZ279137B6 (en) 1995-01-18
US5477677A (en) 1995-12-26
EP0615583B1 (en) 1998-03-18
DK615583T3 (en)
CZ368091A3 (en) 1993-06-16
DK0615583T3 (en) 1999-01-11
DE59209243D1 (en) 1998-04-23
ES2113443T3 (en) 1998-05-01
EP0615583A1 (en) 1994-09-21
JP3231771B2 (en) 2001-11-26
SK66094A3 (en) 1994-11-09
WO1993011363A1 (en) 1993-06-10
AT164209T (en) 1998-04-15
JPH07504723A (en) 1995-05-25

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